HRTS Observations of Solar Fine Scale Structures in the Near-UV

Details HRTS Observations of Solar Fine Scale Structures in the Near-UV HRTS Observations of Solar Fine Scale Structures in the Near-UV

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.9311m&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #93.11; Bulletin of the American Astronomical Society, Vol. 31, p.990

Astronomy and Astrophysics

Astronomy

Scientific paper

The NRL High Resolution Telescope and Spectrograph (HRTS) obtains ultraviolet spectra, ultraviolet spectroheliograms and H alpha spectroheliograms at a spatial resolution of about 1 arc-second along a 900 arc-second slit. The HRTS-9 rocket flew on April 18, 1995 during the declining phase of the solar cycle. The HRTS-9 instrument and observing program were tailored to observe emission patterns inthe ultraviolet for the purpose of studying solar variability. Observation targets included the quiet sun, active regions and the quiet limb. The wavelength range of HRTS-9 spectrograph was from 275 nm to 290 nm. Some of the prominent spectral features in this wavelength range are the Mg II h and k lines at 280 nm, the strong Mg I Fraunhofer line at 285 nm, and the continuum. The ultraviolet spectroheliograph obtained images of a portion of the sun at wavelengths corresponding to a range of temperatures: 1550 (C IV), 1540 (Si I), 1560 (C I), and 1600 (continuum). The primary goal of the HRTS-9 rocket program was to examine the origin of the total solar variability in the intensity variations of solar structures in the near ultraviolet on a variety of spatial scales. The HRTS-9 data reveals the fine structure of the quiet sun, plage, and sun spots in the near ultraviolet. In addition, active region contrast factors are determined for comparison with modes of full disk ultraviolet variability based on SUSIM and SOLTICE observations from UARS.

Affiliated with

Also associated with

No associations

Rating

HRTS Observations of Solar Fine Scale Structures in the Near-UV does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with HRTS Observations of Solar Fine Scale Structures in the Near-UV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HRTS Observations of Solar Fine Scale Structures in the Near-UV will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1122555